微型电动车用永磁无刷电机转矩脉动控制研究  

Research on Torque Ripple Control of Brushless DC Motor for Mini-Battery Electric Vehicle

作　　者：龙波[1] 曹秉刚[1] 周好斌[1] 白志峰[1] 刘小波[2] 

机构地区：[1]西安交通大学机械工程学院,西安710049 [2]西安石油大学机械工程学院,西安710065

出　　处：《西安交通大学学报》2007年第5期576-579,共4页Journal of Xi'an Jiaotong University

基　　金：陕西省中小企业创新基金(06C26216100555)

摘　　要：针对微型电动车用永磁无刷电动机转矩脉动大、低速运行时噪声明显等主要问题,采用模糊控制和滑模控制相结合的方法,克服了未建模参数的影响,保证了滑模到达阶段的鲁棒性,同时抑制了转矩脉动．采用单周期内各功率管均衡调制的方式,不仅消除了反向电流,而且与其他调制方式相比,可使转矩脉动较小．针对永磁无刷电机在换相过程中,非导通相对转矩脉动的影响,提出了以瞬间提高开通相电流上升斜率的方式,来减小由非导通相造成的转矩脉动,使其电流恒定,低速运行转矩脉动降低了30%,有效地降低了微型电动车的起动噪声,不仅骑行舒适,而且具有较强的实用价值．Aiming at permanent brushless DC motor in mini-BEV （battery electric vehicle） with torque ripple and violent noise during low speed running, the fuzzy control method is combined with slide mode control method to suppress the influence due to un-modeling parameters, and to ensure the robustness in the process of reaching slide mode plane. Compared with existing modulating method, torque ripple is greatly reduced by uniform modulating in one monocycle, increasing current slope of upcoming conducting phase instantaneously suppresses the torque ripple by 30% during low speed with obviously lower initiating noise. This method has the merits of easy in realization and being able to obtain good effect.

关 键 词：微型电动车 转矩脉动 模糊控制 无刷电机 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]